body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #50a8b0;
    color: #333;
}

.container {
    max-width: 800px;
    margin: 50px auto;
    padding: 20px;
    background-color: #f0f0f0;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #fff;
    background-color: #69b7a3;
    padding: 20px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.content {
    background-color: #fff;
    padding: 20px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.content h2 {
    color: #333;
    margin-top: 0;
}

.content p {
    color: #666;
    line-height: 1.6;
}

.footer {
    background-color: #50a8b0;
    color: #fff;
    text-align: center;
    padding: 10px;
    border-top: 1px solid #ccc;
    border-radius: 5px;
}

nav {
    text-align: center;
    background-color: rgba(0, 0, 0, 0.5);
    padding: 10px;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav a {
    display: inline-block;
    color: white;
    padding: 14px 16px;
    text-decoration: none;
    transition: background-color 0.3s ease;
}

nav a:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* 特定页面的样式 */
.ysa img, .ysb img, .ysc img {
    width: 100%;
    height: auto;
    border-radius: 50%;
    box-shadow: 0px 1px 3px #666;
    margin-bottom: 20px;
}

/* 响应式布局 */
@media (max-width: 768px) {
    .container {
        margin: 20px;
        padding: 10px;
    }

    h1 {
        padding: 10px;
    }

    nav a {
        padding: 10px 12px;
    }
}
